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- .TH USBD 4
- .SH NAME
- usbd \- Universal Serial Bus daemon
- .SH SYNOPSIS
- .B usbd
- [
- .B -DfV
- ] [
- .B -d
- .I bitmask
- ] [
- .B -u
- root-hub-num
- ]
- .SH DESCRIPTION
- .I Usbd
- manages the USB infrastructure, polls all ports, configures hubs and
- provides access to USB devices through a file system in
- .BR #U .
- It monitors all ports, active or inactive and acts on state changes
- by configuring devices when they are plugged in or turned on and
- unconfiguring them when they are pulled out or switched off.
- .PP
- .B Usbd
- recognizes the following options:
- .TP
- .B d
- Set USB library debugging option
- .IR bitmask .
- A value of 1 sets
- .BI Dbginfo ,
- 2 sets
- .BI Dbgfs ,
- 4 sets
- .BI Dbgproc ,
- and 8 sets
- .BI Dbgcontrol ;
- they may be added to set multiple options.
- .TP
- .B D
- Debug; print the bytes in each message sent or received.
- .TP
- .B f
- Don't fork.
- .TP
- .B u
- Specifies the controller number of the root hub.
- .TP
- .B V
- Verbose; print configuration information and device status as they change.
- .SH SOURCE
- .B /sys/src/cmd/usb/usbd
- .SH "SEE ALSO"
- .IR usb (3),
- .IR usb (4)
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